A flexible and room-temperature operatable gas sensor for robotic olfaction: selective detection of formic acid via UV excitation (opens in new tab)

Robotic olfaction requires gas sensors that are intrinsically safe, mechanically compliant, and capable of selective operation at room temperature. Here, we present a flexible and room-temperature operable gas sensor for formic acid (FA) detection based on a UV-assisted PAM/CA organohydrogel sensing layer. The sensing response is associated with FA adsorption, diffusion, dissociation in the local hydrogel environment, and interfacial electrochemical processes. Photocurrent and UPS measurement...